Shaft-polishing machine.



ATENTED AUG. 4, 196$.-

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ATTORNEYS J. S. GRIFFIN.

APPLICATIOY FILED APR. 4, 1907.

SHAFT POLISHING MAGHI WITNESSES J. s. GRIFFIN, I SHAFT POLISHING MACHINE. APPLICATION PILED AFB 4, 1907 mammal 7 WITNESSES 1. llul b I I F 1 1!|vl...| Eli i 51...... 1!. i 1 nii, .1; 1 ii! 1 .3 3 1i 1uh. .u. f .i1. $i..t...v 3 .d v w. h fihwrwwi Q. Q

- J. S. GRIFFIN.

SHAFT POLISHING MACHINE.

.PATENTED AUG. 4, 1908.

4 sums-sum 4.

. APPLICATION FILED AFB. 4, 1907.

' By 1 A 770/?NE Y S \l I v To all whom "it may concern: i

Be it knownthat I, J onN STEwAn'r -GRIF rm a citizen of the United States, and a resident of Roslyn, in the county of Kittitas and State of Washington, have invented a new and Improved Shaft-Polishing Machine,

of which the following is a full, clear, and

exact description.

This invention relates tomschmery for 6 polishin shafting.

' automatic means for feeding t e shaft to this j The olaject of the iiivention is to produce a. machine of thls classwvhich is simple .111 construction, and wlucln 1s rovided with rolls. i

Further objects of the invention willappear heminafter.

- The invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims. I Reference is tobe had to the accompanying drawings forming a. part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

' Figure 1 is a plan of a machine constructed according to my invention; Fig 2. is a front elevation of the machine shown in Fig. 1; Fig. 3 is an end. elevation showing the end disposed at the left as viewed in Fig. 2; Fig. 4 is a vertical cross section through the machine; Fig. 5-is shorizontal cross section taken throu h the machine at the point where the siaft or work, lies, and this view illustrates especially the means for holding the shaft between the polishing rolls; the point at, which this cross section is taken is indicated by the line 55 in Fig. 6; Fig.

6 is an end elevation of the housings or frame of thems 'chine, and illustrating the manner in which the shaft guides are attached in position; Fig. 7 18 a vertical cross section upon an enlarged scale, taken 1.1)011 the line 7-7 'of' Fig. 1, and illustrating t 1e mechanism for drawing the polished shaft from the 11151- chine; and Fig. 8 IS an elevation showing a portion of the side of the machine opposite to that illustrated in Fig. 2; this view is to further illustrate details of the construction. Referring more particularly to the parts, and especially to Figs. 1 and. 2, 1 represents the frame of the machine, which comprises fourlhousings or columns 2 which are connected in opposite pairs by caps or cap JOHN STEWART GRIFFIN, or ROSLYN, WASHINGTON; v

Specification of Letters Patent.

- Application filed A -a i, 1901. Serial No. assgsos.

w ll

sm'r romsrrnw Patented Aug. 4, 190a.

plates 3, the said cap plates being securely eld in position by suitable cap nuts 4. As indicated most clearly in Fig. 4, between the housings, a main roll 5' is mounted rctatablv in .a central position, and above this roll there is rotatably mounted an adjustable roll 6, the trunnions 7 of the said roll being rotatably mounted in movable boxes or bearings 8 which are guided vertically between the columns. This roll 6 is normally held in an elevated position by means of a transverse bar 9 which extends under the UNITED s'rnrfns PATENT OFFICE; Y?

boxes as indicated, the ends of the said bar.

being provided with bolts 10 which pass upwardly through lugs 11 projecting from the- '\outer sides of the columns.

The bolts 10 extend above the lugs 11, and around them helical springs 12 are arranged, which thrust against nuts 13 on the upper ends of the bolts; The arrangement is such that the S)1lIlgS tend to pull the bar toward an elevated position, and in this way the roll 6 is normally held elevated.

The adjacent side faces of the columns 2 i are provided with substantially U-shaped sockets 14, and these sockets afford means for holdin in position a. pair of oppositely disposed s eeves 15. The manner of mounting these sleeves in position is clearly shown in F 5; they are 0 substantially rectangular form, provided at their extremities with fins 16 which are received in the sockets'l4 as indicated. Behind the fins, ke s 17 are inserted in the sockets, which old the sleeves in osition, as shown in Figs. 5 and 6. Each of t iese sleeves 15 is provided with a longitudinally disposed slot 18, which extends substantiall throughout its entire length. In these 5 ots I provide guide plates 19 respectively, which extend throug the sleeves from the rear, so that the forward edges 20 of the guide plates lie adjacent to each other, as shown in Fi 5. As shown in Fig. 4, these forward edges of the guide plates are slightl Y concave so as to conform to the shape 0 the shaft or work: 21- which is being polished in the machine. In order to hold the guide plates 19 securely in,

position, the upper sides of the sleeves 15 are 24 are provided on the ower sides of the sock- 1 10 ets, and the ears 23 and 24 are connected by ad usting screws 25 as shown in Fig. 4. By screwlng up or UHSCIQWIHQ these ad usting screws, evidently the guide plates may be adjusted in or out as desired.

From the. caps 3, bearings 26 are suspended by bolts 27, as shown in Fig '4, and In these hearings there is rotatably mounted amain shaft 28. These bearings are held securely against rising, if they should be forced upwardly, by means of stout backing screws 29 which pass down through the-caps and seat against the upper sides of the bearmqs. 1 11: order to brace the columns and make the entire frame structure very rigid, the uper portions of the columns are connected by horizontal tie rods 30, as shown in Figs. 3 and 4.

' Over the hearings or boxes 8 the shaft 28 is provided with rigid cam collars 31; a portion of the circumference of these cam collars'is cut away so asto form a circumferential recess 32 as shown in Fig. 4, and the surface of the collars at the point 33 is slightly de )ressed with respect to the surface of the coilars at the point 34; in other words, the 1 radius of the collars increases slowly from one side of'the recess 32 to the other, the amount of increase being, under ordinary circumstances, about an eighth of an inch. From this arrangement it should be under stood that when the shaft 28 is rotated, the collars will operate to depress the boxes 8, 35 while the cam surface'is in contact with the upper sides of the boxes, and, furthermore, when the recesses 32 are-opposite the boxes, they will become slightly elevated through the upward pressure of the springs 12. At 4 the point where the cam collars 31 touch the boxes 8, I provide wear plates 35.

The main shaft 28 is driven by a main gear wheel 36, and this gear wheel is driven by a pinion 37 on' an auxiliary shaft 38 mounted 45 in suitable bearings 39 at the side of the machine. As shown especially in Figs. 1 and 3 this shaft 38 extends to the left side of the machine, and-' is providedwith a gear wheel 40 which meshes with a pinion 41 which is rigidly attached to the trunnions 7 of the adjusting roll 6. A similar pinion 42 is rovided, which is rigidly attached to the r0 1 5, from which arrangement it follows that when the shaft 38 is rotating, the rolls 5 and 55 6 "will be rotated in the same direction.

At the left of the machine, as indicated in.

Fig. 1, there is formed a feed table 43, and at the right of themachine there is constructed a delivery table 44. The feed table 43 conso sists of a feed base 44, in the upper portion of which a plurality of rollers -15 are rotatably mounted, said rollers being in alinement with the shaft 21, and being grooved so as to enable them to advance the shaft into posi- 5.tion between the rollers 5 and 6. Between the rollers 45, the upper face of thefeed table is provided with feed rests 46, which are grooved like the rollers 45 so as to conform tothe shape of the shaft-treated in the machine. The shafts 47 of the rollers are extended at the rear side of the machine, and provided with gear wheels 48'which are driven from pinions 49, the said pinions being mounted on stub shafts. 50,. the outer ends of which are provided with bevel gears 51. The ar- 75 rangement at the delivery table is substantially similar to that describedfor the feed table. At this pointa plurality of delivery .rollers 52 are provided, mounted between rests 53,'and the said delivery rollers 52 so are similar in construction to the rollers 45; they are driven, also, in a'similar manner through the medium of rigidly connected gear wheels 54 driven from stub shafts 55 the said stub shafts being provided with bevel 35 gears56. Adjacent to the bevel gears 51 and 56, there 18 mounted in the machine a longitudinally disposed-feed shaft 57,- and on this feed shait (referring especially to Figs. ,3 and 8) there is loosely mounted a belt pulley 9o 58 adapted to be driven continuously when the machine is running, by means of a belt 59. The said belt 59 is driven from a cam 60 rigidly attached on the end of the main shaft 28., in addition to this function of acting as i a pulley to drive the belt pulley 58, the cam 60 operates to control the operation of the feed rolls and delivery rolls. For this pur pose, on its outer face, the cam 60 is provided with a cam block 61, of curved form, and i this cam block operates once in each revolution of the cam, to rock acam lever 62. The manner of mounting this cam lever is clearly shown in Fig. 3 it is pivotally attached upon the extremity of a'post' 63 which projects horizontally from one of the columns 2. This post 63 extends through the opposite side of the column, to which it is attached, and is provided with an adjustin nut 64 at this point, which nut is adapted to e screwed downagainst a plurality of washers 65, of rubber or similar compressible material, the said washers being arranged between the nut and the face of the column, as shown Against the face of the columnopposite to 5 the washers, a shoulder 66 on the post seats. The purpose of this peculiar construction for mounting the ost will appear more fully hereinafter. T e lower end of the lever 62 is formed into a fork 67 and this fork engages with a sliding cone clutch collar 68 whlchis feathered or s lined on the feed shaft 57.. This clutch col ar 68'cooperates with a correspondinglclutch 1nember 69which is formed rigid wit rangement is should be understood that when theupper end of the lever 62 is forced outwardly by the cam, the clutch faces of the: members 68 and 69 will be closed, and when closed, the belt 59 will rotate the shaft 57;

' hence it should now be understood that an intermittent feed movement will be given to the feed rollers and delivery rollers.

It should be uirderstoodihat tl e grgovedfaces of the feed rollers and delivery rollers are normally slightly depressed with respect to the rests '46 and 53 of the feed table and the delivery table. I provide automatic means for slightlv elevating these rollers when the feed shaft 57 is rotating. For this purpose,"I'mount the feed rollers and delivery rollers in movable. boxes 70, which are vertically guided in grooves '71 in the side faces of the tables. Against the lower faces of these boxes 70, as indicated most clearly in Fig. 2, a plurality of lifting toes 72 are arranged, the said lifting toes being rigidly attached to transverse rock shafts 73. These rock shaits73 at the rear side of the machine,

have rig-idly attachedto them rocker arms' 74, which extend upwardly as indicatedin Fig. 8, and these arms-74 are all connected together b .awoclrer bar 75 which extends continuous y from end toend ofthe machine. The *ock shaft 73, as indicated in Fig; 8, is provided with an upwardly extending rocker arm 76, and this arm is connected by a link 77 with the lower portion of the cam lever 62. From this arrangement it should be understood that when the lower end of the lever 62 moves toward the left as viewed in Fig. 8, to

- close the clutch, the rock shaft 73 will be rotated toward the left, and through the medium of the rocker bar 75, all of the'toes 72 will be moved in a direction to raise the bearing blocks 70. In this way all of the feed rollers and delivery rollers are raisedso as to bring their faces above the sur ace of the i v and 69.

tables in which they are mounted; hence, the rotation of the rollers 'willadvance the shaft longitudinally between the rolls 5 and 6.

It should be understood that .the cam block 61 is so placed uponthe cam 60 that this feed movement of the feed shaft occurs when the adjustable roll 6 is in its elevated position. p

The special arrangement for mounting the vpost 63 will now be referred to again: The

construction described has been adopted in order to give a certain flexibility to the action of the lever in closing the clutch mer zhers 68 In this connection it should beunderstood that the tension or outward pull which the post 63 will receive, by reason of the priassure between the members of the clutch, will operate to com ress the washers 65.-so that these washers co lcctively act as a cushion or spring.

Referring now specially to Figs 1 and 7, I will describe the IHQC'hRIIlSIII fOI discharging the polished shaft from tlie. maoh1ne: For this purpose, the rests 53 of tlre delivery table are provided with slots 78, which extend transversely of the table. Atthe forward side of the table, ejectors 79 are pivotrigidly attached to ally mounted, and these normally lie ust below the slots, as indicated in Fig. 7. At their inner extremities they are formed with upwardly projecting teeth 80 respectively, and are adapted to be ushed upwardly by means of links 81, the said links being pivotally attached below to rocker arms 82, which are a rock shaft 83. This rock shaft 83 is adapted to be rocked b the attendant,- by means of a lever 84 whic ex- 5 tends upwerdl near the end of the machine as shown. it en. the lever is rocked toward the left so as to assume substantially the position shown in dotted lines, the ejectors 79 move u through the slots so as to lift the polishe shaft off of the table and allow it to roll down at the front of the machine.-

The mode of operation of the machinewill now be briefly described: The shaft to be polished is placed upon the feed table 43 in =5 any suitable manner, and as the main shaft 28 revolves, the adjustable roll 6 will move upwardly, when the recesses 32 of the cam collars are over the boxes 8. At this time the springs 12 will pull the adjustable r0116 39 upwardly so that a space is resented between the rolls 5 and 6 into w 'ch the shaft to be polished may be advanced. At this time the cam block 61 operates the lever 62 so as .to close the clutch post of the members 68 and 69." In this way the feed 'shaft 57 will be rotated and the feed rollers will be driven. At the same time, the rock shaft 73 will he rocked so as to raise the rollers on the toes 72. The feed rollers will then operate 73 to advance the shaft longitudinally into the space between the rolls 5 and 6. As the retation of the shaft 28 proceeds, the movable roll 6 will be depressed u on the shaft so as to reduce its diameter an :polish it. For the o5 usual class of work, the amount of reduction of diameter will be about an eighth of an inch, but in finer work, the reduction may be not more than a sixteenth ofan inch. B

the periodical advancing movement of the U shaft hetween the rolls, the rolling or polishing operation progresses until the shaft has passed com letely through the rolls to the delivery table, where it is ejected in the manner described above.

The thickness of the guide plates 19 will dependupon the diameter of the shaft which is being rolled. It should be understood that the upward movement of the feed and deliver stantia ly no effect upon the relation of the gear wheels through whiclr-the rollers are driven, and, likewise, the vertical movement of the movable roll 6 is not sufficient to materially change the relation of the gear wheels 12 40 and 41, as will appear from an inspection of Fig. 3. But if the diameter of the shaftto be polished is from 2 to 4 inches more or less it will be necessary to provide for a horizontal adjustment of the shaft 38.

rollers is so slight that it has sub- -20 Having thus described my invention, I

claim as new and desire to secure byLetters Patent:

. 1. ha shaft polishing machine, in combination, a frame, a pair of reducing rolls mounted therein, means for advancing or withdrawing said reducing rolls with res ectv to each other, afeed table, a lurality of eed rollers mounted in said tab e and adapted to advance the shaft into the space between v said rolls, said feed rollers being normally rollers to advance the shaft when said rolls are withdrawn with respect to each other.

2. In a shaft polishing machine, in combination, a frame, a pair of rolls mounted therein, means for advancing or withdrawing said 7 'rolls with respect to each other, a feed table having rests adapted to'support the shaft to be advanced between said rolls, feed rollers movably mounted in said feed table and normally depressed below the level of said table, and means connecting'said rolls and rollers adapted to elevate the latter when said rolls are in theirwithdrawn position.

3. In a. shaft polishing machine, in combination, a frame, a pair of rolls mounted therein, a feed table, a lurality of boxes movably guided therein, eed rollers mount ed res ectivel in said boxes means for edvancing or Withdrawing-said rolls with respect to each other, whereby the may occupy an adjacent or a separate position, and means operating between said rolls and said boxes adapted to elevate said boxes carrying said rollers when said rolls are in their separated position.

4. In a shaft polishing machine, in combination, a frame, a pair of rolls mounted there in, means for advancing said rolls toward each other or withdrawing the same from each other, a feed table, a plurality of rollers mounted in said table and adapted to ad-v vance the shaft into the space betweensaid rolls, a cam ada ted to rotate with one of said rolls, a feed shaft, means for driving said rollers from said feed shaft, a clutch on said feed shaft, and means for closing said clutch by said cam.

5. In a. shaft polishing machine, in combination, a frame, a pair of rolls mounted therein, means for advancin each other or withdrawing the same from each other, a feed'table, a plurality of rollers mounted in said table and adapted to-ad- Vance the shaft into the space between said rolls, a cam adapted to rotate .with one of said rolls, a feed shaft, means for driving said said rolls, a feed 5 said rolls toward rollers from said feed shaft, a clutch on said" feed shaft, means for closing said clutch by said cam, said rollers being normally dis. said tab; e, and' 3 1--,

nation, a frame, apair of rollslmounted therein, means for advancing said rolls toward' each other pr withdrawing the same from each other, a feed table, a plurality of rollers mounted in said table and adapted to advnnce the shaft into the space between said rolls, a'cam ada ted to rotate with one of aft, means-for driving said rollers from said fecd shaft, a clutch. on said feed shaft, means for closing said clutch by said cam, said rollers bein normally depressed below the level of saic feed table, and

' mechanism actuatedby said cam for raising said when when said rolls are separated.

7. In a shaft polishin machine, in combi-' nation, a frame, a pair 0? rolls mounted therein, means for advancing saidrolls toward each other and separating the same, a cam rotating with one of said rolls, a'fced table, a

plurality of rollers mounted in said feed talo, a feed shaft, means for driving said rollore from said feed shaft, a clutch on said feed shaft, a cam lever actuated by said cam and affording means for closing'said clutch, and mechanism actuated by said lever for raising said rollers.

8. In a shaft polishin machine, in combination, a frame, a pair 0 rolls mounted there in, means for advancing said rolls toward each other and separating the same, a feed table, a plurality of boxes mounted to slide vertically therein, feedirollers carried respec tively in said boxes, a feed shaft, means for driving said rollers from said feed shaft, a. clutch on said shaft, a cam rotating with one of said rollers, a'cam lever actuated b said cam and actuating said clutch, a lura ity of liftin toes dis oscd res ective y beneath said boxes, am means or operating said liftin toes from said cam lever.

9. In a shaft polishing machine, in con1bination, a frame, a fixed roll rotatably mounted therein, a movable roll mounted in said frame adjacent to said first roll, boxes suporting said movable roll, a main shaft, colars carried on said sh f and having cam faces adapted to depress said boxes to force said movable roll toward said fixed roll, said collars having recesses in the faces thereof,

means tending to raise said boxes whereby said movable roll will be elevated when said recesses are passing said boxes, feed rollers adapted to advance a shaft'between said rolls, and means controlled by said rolls for, actuating said feed rollers when said recesses are adjacent to said boxes. V

10. In a rolling machine,- the combination of a frame, a pair of rolls adapted to operate eems 4f 13 upon a shaft when it is placed between them in a position longitudinal to the axis, said rolls so constructed and arranged that the working aortions of the faces will advance and IEC8( e at certain timed intervals, means adapted to support the shaft andfeed it longitudinally into the space between said rolls, and means cooperating with the reducing rolls and the feeding means construct-ed and arranged-to operate the feeding means sons to feed the material atthe time when the adjacent working portions of the rolls are in the I receded position.

11. In a shaft rolling machine, in combination, a frame, a pair of reducin rolls adapted to operate upon a shaft when p aced therebetweenin a position longitudinal to the axes and arranged that they will advance toward each other and 'recede at certain timed intervals, means for feeding the shaft longitudinally into the space between said rolls, and

of said rolls, said rolls being so constructed v means cooperating with said rolls and said feeding means constructed and arranged to o erate the feeding means so as to feed the s aft at the time that the said rolls are in their receded position.

In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

J OHN STEYYART GRIFFIN. \Vitnesses: I

LIZZIE SMiTH, Hnxm' SMITH. 

